|Location:||Road Observations - Butch and Fresno|
Route & General Observations
A quick drive through Summit Lake revealed two new natural avalanches sometime on April 1st or 2nd.
The first avalanche was a storm slab on Fresno (Easterly facing at ~3,000′). This looks to have stepped down into old weak layers (possibly depth hoar which is prevalent in the area). Propagation was not significant with this slide.
The second slab avalanche was on Butch Mtn (Westerly facing at ~4,000′). Roughly a 2′ crown with significant propagation. This slide looks to have been triggered by a cornice fall then sympathetically triggered a slab on a lower sub-ridge (looker’s right). Look closely at photos below.
|Trigger||Natural||Avalanche Type||Hard Slab||Aspect||Unknown|
|Elevation||unknown||Slope Angle||unknown||Crown Depth||unknown|
Obvious signs of instability
|Recent Avalanches?||Yes||Collapsing (Whumphing)?||No||Cracking (Shooting cracks)?||No|
Recent avalanches continue despite quieter weather.